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How to track NullPointerException in development environment ?

 
Greenhorn
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Is there any tool or specific way , to track NullPointerException in development environment ?
 
Sheriff
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What do you mean by "track" ?
 
Harish Sahu
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I mean to say, generally we use to do null check to handle NullPointerException , but in that case, if we miss out somewhere then there is a possibility of getting NullPointerException.

I want to make sure that, there is no possibility of throwing NullPointerException in my application , so how can I do that.
 
Christophe Verré
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By coding properly I mean, unless your code is fully tested, you just can't prevent it. If it happens, it happens. If you need to log unexpected exceptions like a NullPointerException, you should catch them somewhere and log them. You can't just ignore them and do as if nothing happened.
 
Rancher
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It is simply not possible for you to code an application so that there are zero NPE thrown. You can, if you wish, catch them all, and prevent them from being seen by your user.

If you are asking how to you find and fix them in your code, the usual method is to set a breakpoint in the IDE that you are using, and trigger it.

There are times when throwing a Null Pointer Exception is the proper thing for a method to do.
 
Harish Sahu
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Thanks guys for your comments.
 
Marshal
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